Pulse width modulation power converter and control method employing different sets of PID coefficients

US9203305B2 · kind B2 · utility

Assignee

• Zentrum Mikroelektronik Dresden AG · DE

Inventors

• Frank Trautmann · Munich, DE
• Armin Stingl · Erding, DE

Key dates

• Filing date: Nov 9, 2011
• Grant date: Dec 1, 2015
• Expiry date: Nov 9, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G05B13/024
• WIPO field: Control
• WIPO sector: Instruments

Abstract

In a Pulse Width Modulation power converter and control method, wherein one of the operating modes steady state or load transient is detected. For either of the two operating modes one set of PID coefficients is provided for the control law that controls the duty ratio command. In case a load transient is detected, the KP gain is selected adaptively. Operating mode detection is supported by oversampling the error signal.